A new application about 1,5-Diphenylpenta-1,4-dien-3-one

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As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. Computed Properties of C17H14O, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9

Synthesis of monodisperse oligo(1,4-phenyleneethynylene-alt-1,4- triptycyleneethynylene)s

(Chemical Equation Presented) The synthesis of monodisperse oligo(p-phenyleneethynylene)s 8an with alternating 2,5-dihexyl-1,4-phenylene and 6,14-di-tert-butyl-1,4-triptycylene units and orthogonally protected alkyne end groups is reported. Starting from 6,14-di-tert-butyl-1-(2-triisopropylsilylethynyl)-4-(2-trimethylsilylethynyl) -triptycene (5a), 1,4-dihexyl-2,5-diiodobenzene (10), and 1,4-dihexyl-2-iodo-5- (3-hydroxyprop-1-ynyl)-benzene (9), oligomers with up to four repeating units, i.e., eight phenyleneethynylene units, were prepared through a partially divergent-convergent route with the alkynyl-aryl (Sonogashira-Hagihara) coupling as the key reaction. The starting compound 5a was prepared from triptycenequinone through a sequence of addition of 2- trialkylsilylethynyllithium, reduction and concomitant elimination of water, conversion of the phenol into a triflate, and finally Pd/Cu-catalyzed coupling with trialkylsilylethyne. A similar access to the key compound for a stringent divergent-convergent route, 6,14-di-tert-butyl-1-(3-hydroxybut-1-ynyl)-4-(2- triisopropylsilylethynyl)triptycene (6), is reported. The optical properties of the oligomers 8an and the corresponding oligo(2,5-dihexyl-1,4- phenyleneethynylene) s in dilute solution are almost identical, whereas they differ significantly for the solid, undiluted compounds.

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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate